With an output of 7.5 W at 110 V this circuit was found in a 1968 Motorola documentation. The circuit has an operating range of 95 to 2 000 Hz.
This circuit, suggested by Siemens, allows the activation of 24 V solenoids from TTL LSL signals,...
In the figure we have the way to linearize the response of a TTL port with the use of a feedback...
In the figure we have the original version of an amplifier with high input impedance, 1.2 M ohms....